#include <bits/stdc++.h> using namespace std;

int main() { int n, a[15]; double s = 0; cin >> n; for (int i = 1; i <= n; i++) { cin >> a[i]; s = s + a[i]; } double AVE = 1.0 * s / n; cout << "AVE=" << fixed << setprecision(1) << AVE << endl; for (int i = 1; i <= n; i++) { if (a[i] > AVE) { cout << i << ":" << a[i] << " "; } } return 0; }